TripVista: Triple Perspective Visual Trajectory Analytics and its application on microscopic traffic data at a road intersection
Visualization Symposium, IEEE Pacific (2011)
Hong Kong, China
Mar. 1, 2011 to Mar. 4, 2011
In this paper, we present an interactive visual analytics system, Triple Perspective Visual Trajectory Analytics (TripVista), for exploring and analyzing complex traffic trajectory data. The users are equipped with a carefully designed interface to inspect data interactively from three perspectives (spatial, temporal and multi-dimensional views). While most previous works, in both visualization and transportation research, focused on the macro aspects of traffic flows, we develop visualization methods to investigate and analyze microscopic traffic patterns and abnormal behaviors. In the spatial view of our system, traffic trajectories with various presentation styles are directly interactive with user brushing, together with convenient pattern exploration and selection through ring-style sliders. Improved ThemeRiver, embedded with glyphs indicating directional information, and multiple scatterplots with time as horizontal axes illustrate temporal information of the traffic flows. Our system also harnesses the power of parallel coordinates to visualize the multi-dimensional aspects of the traffic trajectory data. The above three view components are linked closely and interactively to provide access to multiple perspectives for users. Experiments show that our system is capable of effectively finding both regular and abnormal traffic flow patterns.
user interfaces, data visualisation, interactive systems, road traffic, traffic engineering computing, multidimensional data visualization, TripVista, triple perspective visual trajectory analytics, microscopic traffic data, road intersection, interactive visual analytics system, user interface, pattern exploration, ring-style slider, ThemeRiver, abnormal traffic flow pattern, Trajectory, Data visualization, Roads, Rivers, Brushes, Visual analytics, Traffic visualization, Visual analytics, Linked view, Spatiotemporal, Multidimensional data visualization
"TripVista: Triple Perspective Visual Trajectory Analytics and its application on microscopic traffic data at a road intersection," 2011 IEEE Pacific Visualization Symposium (PacificVis)(PACIFICVIS), Hong Kong, 2011, pp. 163-170.